Data dynamic authorization system and method oriented to data multi-dimensional sensitive attributes

The invention provides a data dynamic authorization method and system oriented to data multi-dimensional sensitive attributes, and belongs to the field of power network security. According to the method, the convenience of data multi-dimensional sensitive attributes in policy management and the capability of trust decision in fine-grained policy specification generation are combined, and meanwhile, the attribute parameters are endowed with real-time performance, so that dynamic data authorization is realized. According to the method, a more flexible data authorization solution is provided, the credibility and the attribute are combined together, the permission is allowed to change along with the change of the surrounding environment, the complexity of data authorization management can be simplified, and a special access permission is provided for a specific terminal group through the attribute of the power marketing terminal. According to the method, special restrictions are automatically set for some users t